How severe is CVE-2021-40160?

CVE-2021-40160 has a CVSS 3.x base score of 7.8, rated high severity. It is exploitable over local access with low attack complexity, requires no privileges and user interaction. Impact on confidentiality is high, integrity high, and availability high.

Is CVE-2021-40160 being actively exploited?

It is not currently listed in CISA's KEV catalog. Its EPSS exploit-prediction score is 2% (72nd percentile), an estimate of the probability of exploitation in the next 30 days.

What products are affected by CVE-2021-40160?

CVE-2021-40160 primarily affects Autodesk Revit. In total, 19 product configurations (CPEs) are listed as vulnerable; see the affected-products list for the exact versions.

How do I fix CVE-2021-40160?

Review the linked vendor and NVD advisories for patched versions and mitigations, then upgrade or apply the recommended workaround. Given its high severity, prioritise patching exposed systems.

When was CVE-2021-40160 published?

CVE-2021-40160 was published on 2021-12-23 and last updated on 2026-06-17.

CVE-2021-40160

CVE-2021-40160 is a high-severity vulnerability in Autodesk Revit with a CVSS 3.x base score of 7.8. It is not currently listed as actively exploited by CISA, and its EPSS exploit-prediction score is low. The underlying weakness is classified as CWE-125.

Key facts

Severity: High (CVSS 3.x base score 7.8)
CVSS v2: 6.8
EPSS exploit prediction: 2% (72nd percentile)
Actively exploited: Not listed in CISA KEV
Weakness: CWE-125
Affected product: Autodesk Revit
Published: 2021-12-23
Last modified: 2026-06-17

Description

PDFTron prior to 9.0.7 version may be forced to read beyond allocated boundaries when parsing a maliciously crafted PDF file. This vulnerability can be exploited to execute arbitrary code.

Frequently asked questions

What is CVE-2021-40160?: PDFTron prior to 9.0.7 version may be forced to read beyond allocated boundaries when parsing a maliciously crafted PDF file. This vulnerability can be exploited to execute arbitrary code.
How severe is CVE-2021-40160?: CVE-2021-40160 has a CVSS 3.x base score of 7.8, rated high severity. It is exploitable over local access with low attack complexity, requires no privileges and user interaction. Impact on confidentiality is high, integrity high, and availability high.
Is CVE-2021-40160 being actively exploited?: It is not currently listed in CISA's KEV catalog. Its EPSS exploit-prediction score is 2% (72nd percentile), an estimate of the probability of exploitation in the next 30 days.
What products are affected by CVE-2021-40160?: CVE-2021-40160 primarily affects Autodesk Revit. In total, 19 product configurations (CPEs) are listed as vulnerable; see the affected-products list for the exact versions.
How do I fix CVE-2021-40160?: Review the linked vendor and NVD advisories for patched versions and mitigations, then upgrade or apply the recommended workaround. Given its high severity, prioritise patching exposed systems.
When was CVE-2021-40160 published?: CVE-2021-40160 was published on 2021-12-23 and last updated on 2026-06-17.

References

https://www.autodesk.com/trust/security-advisories/adsk-sa-2021-0010

Affected products (19)

cpe:2.3:a:autodesk:revit:*:*:*:*:*:*:*:*
cpe:2.3:a:autodesk:navisworks:*:*:*:*:*:*:*:*
cpe:2.3:a:autodesk:advance_steel:*:*:*:*:*:*:*:*
cpe:2.3:a:autodesk:autocad:*:*:*:*:*:*:*:*
cpe:2.3:a:autodesk:autocad:*:*:*:*:*:macos:*:*
cpe:2.3:a:autodesk:autocad_architecture:*:*:*:*:*:*:*:*
cpe:2.3:a:autodesk:autocad_electrical:*:*:*:*:*:*:*:*
cpe:2.3:a:autodesk:autocad_lt:*:*:*:*:*:*:*:*
cpe:2.3:a:autodesk:autocad_lt:*:*:*:*:*:macos:*:*
cpe:2.3:a:autodesk:autocad_map_3d:*:*:*:*:*:*:*:*
cpe:2.3:a:autodesk:autocad_mechanical:*:*:*:*:*:*:*:*
cpe:2.3:a:autodesk:autocad_mep:*:*:*:*:*:*:*:*
cpe:2.3:a:autodesk:autocad_plant_3d:*:*:*:*:*:*:*:*
cpe:2.3:a:autodesk:civil_3d:*:*:*:*:*:*:*:*
cpe:2.3:a:autodesk:design_review:2018:-:*:*:*:*:*:*
cpe:2.3:a:autodesk:design_review:2018:hotfix:*:*:*:*:*:*
cpe:2.3:a:autodesk:design_review:2018:hotfix2:*:*:*:*:*:*
cpe:2.3:a:autodesk:design_review:2018:hotfix3:*:*:*:*:*:*
cpe:2.3:a:autodesk:design_review:2018:hotfix4:*:*:*:*:*:*

More vulnerabilities in Autodesk Revit

CVE-2025-8354 — High (CVSS 7.8): A maliciously crafted RFA file, when parsed through Autodesk Revit, can force a Type Confusion vulnerability. A…
CVE-2025-8894 — High (CVSS 7.8): A maliciously crafted PDF file, when parsed through certain Autodesk products, can force a Heap-Based Overflow…
CVE-2025-8893 — High (CVSS 7.8): A maliciously crafted PDF file, when parsed through certain Autodesk products, can force an Out-of-Bounds Write…
CVE-2025-5039 — High (CVSS 7.8): A maliciously crafted binary file, when present while loading files in certain Autodesk applications, could lead to…
CVE-2025-5042 — High (CVSS 7.8): A maliciously crafted RFA file, when parsed through Autodesk Revit, can force an Out-of-Bounds Read vulnerability. A…
CVE-2025-5040 — High (CVSS 7.8): A maliciously crafted RTE file, when parsed through Autodesk Revit, can force a Heap-Based Overflow vulnerability. A…

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Other CWE-125 (Out-of-bounds Read) vulnerabilities

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CVE-2024-22004 — Critical (CVSS 10.0): Due to length check, an attacker with privilege access on a Linux Nonsecure operating system can trigger a…
CVE-2021-41556 — Critical (CVSS 10.0): sqclass.cpp in Squirrel through 2.2.5 and 3.x through 3.1 allows an out-of-bounds read (in the core interpreter) that…
CVE-2021-21777 — Critical (CVSS 10.0): An information disclosure vulnerability exists in the Ethernet/IP UDP handler functionality of EIP Stack Group OpENer…
CVE-2017-14451 — Critical (CVSS 10.0): An exploitable out-of-bounds read vulnerability exists in libevm (Ethereum Virtual Machine) of CPP-Ethereum. A…
CVE-2013-0767 — Critical (CVSS 10.0): The nsSVGPathElement::GetPathLengthScale function in Mozilla Firefox before 18.0, Firefox ESR 10.x before 10.0.12 and…

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